发明授权
- 专利标题： Four zone multifocal lenses
- 专利标题（中）： 四区多焦点镜片
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申请号： US10440967申请日： 2003-05-19
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公开(公告)号： US07377638B2公开(公告)日： 2008-05-27
- 发明人: Amitava Gupta , Shyamy Sastry , C. Benjamin Wooley
- 申请人： Amitava Gupta , Shyamy Sastry , C. Benjamin Wooley
- 申请人地址： FR Charenton Cedex
- 专利权人： Essilor International (Compagnie Generale d'Optique)
- 当前专利权人： Essilor International (Compagnie Generale d'Optique)
- 当前专利权人地址： FR Charenton Cedex
- 代理机构： Occhiuti Rohlicek & Tsao LLP
- 主分类号： G02C7/06
- IPC分类号： G02C7/06
摘要：
The present invention provides multifocal lenses containing at least four zones of different refractive power. The zones are positioned such that the wearer is able to use the inferior-most portion of the lens to more clearly, as compared to conventional multifocal lenses, view objects at distances more than 45 cm from the eye.
公开/授权文献
- US20040233384A1 Four zone multifocal lenses 公开/授权日：2004-11-25
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